Duncan & Son Lines Inc
Buckeye, Arizona · Carrier number 44035
259
power units
259
power units
Duncan & Son Lines Inc is a freight carrier based in Buckeye, Arizona with 259 power units and 231 drivers as reported, the 2,216th largest trucking fleet in the US and the 58th largest in Arizona. In the 24 months to Sep 30, 2026 it had 14 reportable crashes (5.41 per 100 power units vs 2.98 for all carriers).
Updated Oct 11, 2026 · crashes and inspections to Sep 30, 2026
Power units
259
#58 in AZ
Drivers
231
231 with commercial license
Crashes, 24 mo
14
0 fatal
Per 100 trucks
5.41
All carriers: 2.98
Vehicles out of service
13.0%
All inspections: 22.8%
Inspections, 24 mo
424
52% with no violation
Compared with other carriers
Crash rate over 24 months per 100 power units, and the share of roadside inspections that took the vehicle or driver off the road
| Crashes / 100 trucks | Vehicles OOS | Drivers OOS | |
|---|---|---|---|
| Duncan & Son Lines Inc | 5.41 | 13.0% | 1.2% |
| Carriers with 10+ trucks in AZ | 2.90 | 20.2% | 2.7% |
| Carriers with 10+ trucks, US | 2.98 | 19.3% | 3.6% |
| All roadside inspections | - | 22.8% | 6.4% |
Lower is better. Carriers that drive more miles per truck can have more crashes per truck.
Crashes, 24 months
0 people killed and 4 injured
- Fatal0
- Injury4
- Tow-away10
Roadside inspections, 24 months
Inspections and how many ended out of service
| Kind | Inspections | Out of service | Rate |
|---|---|---|---|
| Driver | 423 | 5 | 1.2% |
| Vehicle | 331 | 43 | 13.0% |
| Hazardous load | 22 | 0 | 0.0% |
Carrier facts
- Carrier number
- 44035
- Based in
- Buckeye, Arizona
- Registered
- Jun 1, 1974
- Operation
- Across state lines
- Carries
- Freight
- Authority for hire
- Active
- Safety rating
- Satisfactory (Oct 13, 2010)
- Miles driven
- 23.8 million (2025)
- Type
- For hire
- Cargo
- Building materials, Chemicals, Construction, General freight, Grain feed hay, Intermodal containers, Machinery, Meat
- Last update filed
- Feb 10, 2026
Questions and answers
How many trucks does Duncan & Son Lines Inc have?
Duncan & Son Lines Inc reports 259 power units (trucks, tractors and buses) and 231 drivers, 231 of them with a commercial license. That is the 2,216th largest fleet among US trucking carriers. Its trucks drove 23.8 million miles in 2025.
Is Duncan & Son Lines Inc a safe carrier?
In 24 months Duncan & Son Lines Inc had 14 reportable crashes, 5.41 per 100 power units (above the 2.98 of all carriers with 10+ trucks). 13.0% of its vehicle inspections took the truck off the road (all inspections: 22.8%). Its latest official safety rating is Satisfactory (Oct 13, 2010). A crash record does not say who caused the crash.
Reportable crashes of trucks and buses: a death, an injury or a vehicle towed away. A crash record does not say who caused the crash. Recent months can still grow as late reports arrive. Out-of-service rate: the percent of roadside inspections that took the driver or the vehicle off the road until a serious problem was fixed. Carriers with few inspections have rates that swing a lot. Fleet, drivers and miles as the carrier reported them. Official public data, updated daily.